AFOQT Practice Test

What is the primary function of the flaps located on the trailing edge of the wing?

1. Increase the wing's drag for faster flight

2. Increase the wing's surface area to generate lift at slower speeds

3. Act as a speed brake for descent

4. Assist in roll control

The correct answer is: Increase the wing's surface area to generate lift at slower speeds

The primary function of the flaps located on the trailing edge of the wing is to increase the wing's surface area, which helps generate additional lift, particularly during slower flight speeds such as takeoff and landing. When the flaps are deployed, they modify the shape of the wing by extending and changing the airflow over the wing, resulting in a higher coefficient of lift. This enhancement allows the aircraft to fly safely at lower speeds by increasing stability and control during critical phases of flight. The increase in surface area also allows for better lift generation, which is essential for maintaining flight as the aircraft descends or approaches landing speeds. This function is crucial for ensuring that an aircraft can operate efficiently and safely in various flight conditions, particularly during takeoff and landing when speed is typically lower. The other options, while related to wing performance, do not capture the primary function of flaps. For instance, while flaps can increase drag, their primary design purpose is not for faster flight but for improved lift during slower speeds. Similarly, while flaps can assist in descent rates, their function is not primarily to act as a speed brake, nor do they contribute directly to roll control, which is primarily managed by ailerons. Hence, the correct focus is on